Layers of the earth
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Layers of the Earth. Add 2 boxes. GLUE ON PAGE 117. Crust - rigid, rocky outer surface of the Earth, composed mostly of basalt and granite. Thinner under oceans Continental Crust- thick parts of the Earths crust not located under ocean. Lithosphere- crust, plus rigid, upper mantle

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Layers of the Earth

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Layers of the earth

Layers of the Earth


Layers of the earth

Add 2 boxes


Layers of the earth

GLUE ON PAGE 117


Layers of the earth

  • Crust- rigid, rocky outer surface of the Earth, composed mostly of basalt and granite. Thinner under oceans

  • Continental Crust- thick parts of the Earths crust not located under ocean.

  • Lithosphere- crust, plus rigid, upper mantle

  • Oceanic crust- thin parts of Earth’s crust under oceans.

  • Ocean- Large bodies of water, sitting atop oceanic crust.

  • Mohorovicic Discontinuity- separates crust and upper mantle


Layers of the earth

  • Mantle- rocky layer located under crust- composed of silicon, oxygen, magnesium, iron, aluminum, and calcium. Convection (heat) currents carry heat from the inner mantle to the cooler outer mantle.

  • Upper mantle- (rigid) uppermost part of the mantle, part of lithosphere.

  • Upper mantle (flowing) Athenosphere- lower part of the upper mantle that exhibits plastic (flowing) characteristics.

  • Asthenosphere- Layer in upper mantle that is made of material that can be reshaped and deformed and on which the continental plates move.


Layers of the earth

  • Lower mantle- (semi-rigid) deepest part of the mantle, just above core.

  • Outer core- Molten iron-nickel layer that surrounds the inner core.

  • Inner core- solid iron-nickel center of the Earth, very hot and under great pressure.


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